Slack: threads started from SlackApi: threads that you create programmaticallyEmail: threads created from an inbound email
Using Plain
Auto-responses
To set up an auto-response go to Settings → Auto-responses
An auto-response can be useful in situations of acute support load, such as during incidents, or to confirm you received a support request and manage expectations with customers.
Auto-response messages are best kept short and personable without too many links or formatting. Messages which are too long and scripted will often just be ignored as they are too obviously automated.
When you configure an auto-responses, you can choose which channels it will be used in:

